Ukusetshenziswa kwe-methyl cellulose ekudleni

I-Cellulose iyi-polymer yemvelo eningi kakhulu emvelweni. Kuyinhlanganisela ye-polymer eqondile exhunywe yi-D-glucose ngamabhondi e-β-(1-4) e-glycosidic. Izinga le-polymerization ye-cellulose lingafinyelela ku-18,000, futhi isisindo samangqamuzana singafinyelela ezigidini ezimbalwa.

I-cellulose ingakhiqizwa kusuka ku-pulp yezinkuni noma ukotini, yona ngokwayo ayincibiliki emanzini, kodwa iqiniswa nge-alkali, ifakwe i-methylene chloride ne-propylene oxide, igezwe ngamanzi, futhi yomiswe ukuze kutholakale i-methyl cellulose encibilikayo emanzini (MC) futhi I-hydroxypropyl methylcellulose (HPMC), okungukuthi, i-methoxy ne-hydroxypropoxy isetshenziselwa ukufaka esikhundleni samaqembu e-hydroxyl ku-C2, C3 kanye ne-C6 isikhundla seglucose ukuze kwakheke ama-nonionic cellulose ethers.

I-Methyl cellulose iyimpushana ecolekile engenaphunga, emhlophe ukuya kokhilimu emhlophe ngokubukeka, kanti i-pH yesixazululo iphakathi kuka-5-8.

Okuqukethwe kwe-methoxyl ye-methylcellulose esetshenziswa njengesengezo sokudla kuvame ukuba phakathi kuka-25% no-33%, izinga elihambisanayo lokushintsha liyi-17-2.2, kanti izinga lethiyori lokushintsha liphakathi kuka-0-3.

Njengesengezo sokudla, okuqukethwe kwe-methoxyl ye-hydroxypropyl methylcellulose kuvame ukuba phakathi kuka-19% no-30%, kanti okuqukethwe kwe-hydroxypropoxyl kuvame ukuba phakathi kuka-3% no-12%.

Icubungula izici

gel thermoreversible

I-methylcellulose/I-Hydroxypropylmethylcellulose inezakhiwo ze-thermoreversible gelling.

I-Methyl cellulose/hydroxypropyl methyl cellulose kufanele incibilikiswe emanzini abandayo noma emanzini okushisa avamile. Uma isisombululo se-aqueous sishiswa, i-viscosity izoqhubeka nokuncipha, futhi i-gelation izokwenzeka lapho ifinyelela izinga lokushisa elithile. Ngalesi sikhathi, i-methyl cellulose/hydroxypropyl methyl cellulose Isixazululo esisobala se-propyl methylcellulose saqala ukuphenduka sibe mhlophe opaque, futhi i-viscosity ebonakalayo yanda ngokushesha.

Lokhu kushisa kubizwa ngokuthi izinga lokushisa lokuqalisa ijeli elishisayo. Njengoba ijeli liphola, i-viscosity ebonakalayo iyancipha ngokushesha. Ekugcineni, ijika le-viscosity lapho ukupholisa kuhambisana nejika le-viscosity yokuqala yokushisa, ijeli iphenduka isixazululo, isisombululo siphenduka ijeli lapho sishiswa, futhi inqubo yokubuyela emuva ibe yisisombululo ngemva kokupholisa iyabuyiselwa futhi iphindaphindeka.

I-Hydroxypropyl methylcellulose inezinga lokushisa eliphezulu lokuqalisa i-thermal gelation kune-methylcellulose namandla ejeli aphansi.

Pukusebenza kahle

1. Izakhiwo zefilimu

Amafilimu akhiwe i-methylcellulose/hydroxypropylmethylcellulose noma amafilimu aqukethe kokubili angavimbela ngokuphumelelayo ukufuduka kwamafutha nokulahlekelwa kwamanzi, ngaleyo ndlela aqinisekise ukuzinza kwesakhiwo sokudla.

2. Emulsifying izakhiwo

I-Methylcellulose/Hydroxypropylmethylcellulose inganciphisa ukungezwani kwendawo futhi inciphise ukunqwabelana kwamafutha ukuze kube nokuzinza okungcono kwe-emulsion.

3. Ukulawula ukulahleka kwamanzi

I-Methylcellulose/Hydroxypropylmethylcellulose ingalawula ngempumelelo ukufuduka komswakama wokudla kusuka emakhazeni kuya ekushiseni okujwayelekile, futhi inganciphisa umonakalo, i-ice crystallization kanye nezinguquko zokuthungwa kokudla okubangelwa isiqandisi.

4. Ukusebenza okunamathelayo

I-Methylcellulose/Hydroxypropylmethylcellulose isetshenziswa ngamanani asebenzayo ukuze kuthuthukiswe amandla ebhondi afanele ngenkathi kugcinwa umswakama nokulawula ukukhishwa kwe-flavour.

5. Ukusebenza kwe-hydration kubambezelekile

Ukusetshenziswa kwe-methylcellulose/hydroxypropylmethylcellulose kunganciphisa i-viscosity yokumpompa kokudla ngesikhathi sokucubungula okushisayo, ngaleyo ndlela kuthuthukisa kakhulu ukusebenza kahle kokukhiqiza. Yehlisa ukonakala kwe-boiler nemishini, isheshisa izikhathi zomjikelezo wenqubo, ithuthukisa ukusebenza kahle kokushisa, futhi yehlise ukwakheka kwediphozithi.

6. Ukwenza ukuqina

I-Methylcellulose/Hydroxypropylmethylcellulose ingasetshenziswa ihlanganiswe nesitashi ukuze kukhiqizwe umphumela we-synergistic, ongakhuphula kakhulu i-viscosity ngisho nasezingeni eliphansi kakhulu lokwengeza.

7. Isixazululo sizinzile ngaphansi kwezimo ze-asidi nezotshwala

Izixazululo ze-Methylcellulose/Hydroxypropylmethylcellulose zizinzile kuze kufike ku-pH 3 futhi zinokuzinza okuhle ezixazululweni eziqukethe utshwala.

Ukusetshenziswa kwe-methyl cellulose ekudleni

I-Methyl cellulose iwuhlobo lwe-non-ionic cellulose ether olwakhiwe ngokusebenzisa i-cellulose yemvelo njengempahla eluhlaza futhi esikhundleni samaqembu e-hydroxyl kuyunithi ye-anhydrous glucose ku-cellulose ngamaqembu e-methoxy. Inokugcinwa kwamanzi, ukuqina, i-emulsification, ukwakheka kwefilimu, ukuguquguquka Ububanzi be-pH ebanzi kanye nomsebenzi ongaphezulu kanye neminye imisebenzi.

Isici sayo esikhethekile kakhulu i-gelation eguquguqukayo eguquguqukayo, okungukuthi, isixazululo sayo samanzi sakha ijeli lapho sishiswa, futhi sibuyela emuva kwisisombululo lapho sipholile. Isetshenziswa kakhulu ekudleni okubhakiwe, ukudla okuthosiwe, ama-dessert, amasoso, amasobho, iziphuzo, nama-essence. kanye noswidi.

I-super gel ku-methyl cellulose inamandla ejeli angaphezu kokuphindwe kathathu kunamajeli ashisayo e-methyl cellulose, futhi inezinto zokunamathela eziqine kakhulu, ukugcinwa kwamanzi kanye nezakhiwo zokugcina umumo.

Ivumela ukudla okuhlanganisiwe ukuthi kugcine ukuthungwa kwakho okuqinile okufiselekayo kanye nokuzwakala komlomo okunejusi kokubili phakathi nesikhathi eside ngemva kokushisisa kabusha. Izicelo ezijwayelekile wukudla okuqandisiwe okusheshayo, imikhiqizo yemifino, inyama ehlanganisiwe, inhlanzi nemikhiqizo yezilwane zasolwandle namasoseji anamafutha amancane.